When I came out no one actually believed me. I live in an area where gay men are expected to be perfect molds of the stereotype, and often are. I'm tall, athletic and mild mannered, so there's no way I could be gay as those people are slim, short and flamboyant. I'd like to be able to say "be yourself, it'll all work out for the best" but I can't do that in good conscience if I don't know where you live. Canada is one the countries more forgiving to gay relationships, but even still not very far from me a gay couple was recently burned out of their home while they were inside sleeping. It isn't fair for you to have to hide any part of your identity, and I'm not saying that you do. Only you know your situation well enough to be the judge of who you should or shouldn't tell. If you are at all concerned, you could perhaps first talk to someone you know not to be homophobic, or someone who has an implicit confidentiality agreement (a councilor, a student adviser, a doctor, etc.). and ask for their advice.